noun the material of the nucleus of a cell that does not stain with basic dyes Compare chromatin achromatin a·chro·ma·tin (ā-krō’mə-tĭn) n. The part of a cell nucleus that remains less colored than the rest of the nucleus when stained or dyed. a·chro’ma·tin’ic adj.

freedom from color. freedom from chromatic aberration, as in an . Historical Examples Thus examined, the departure of the eye from achromatism appears very gross indeed. Six Lectures on Light John Tyndall The achromatism of prisms depends upon the same principles, and it is effected in the same way as that of lenses. Cooley’s Cyclopdia […]

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